Who Are HICL Builders?

Based in Kingston and Surbiton, Home Improvements & Construction Ltd (HICL Builders) is a family-run construction company serving homeowners across South-West London and Surrey. With over 20 years of experience, we specialise in loft conversions, home extensions, kitchen and bathroom renovations, HMOs, and full refurbishments.

Led by Andi Drishti, a highly experienced builder with a background in qualified carpentry and structural plan interpretation, HICL offers a stress-free, start-to-finish service for domestic and commercial clients. We are City and Guilds certified, provide a 5-year structural guarantee, and supply a detailed plan of works for major builds.

Our clients benefit from:

• Full-service, end-to-end project delivery
  
  
• Qualified, courteous and vetted tradespeople
  
  
• Trade discounts and excellent aftercare
  
  
• A genuine understanding of what homeowners want
  
  

Discover our friendly team: Meet Andi & Debra

When Should I Involve a Builder?

This is one of the top construction FAQs in London. The short answer? Ideally, as early as possible. Engaging a reputable construction company like HICL at the initial stages can save time, avoid costly design revisions, and provide you with valuable insights on feasibility and budgeting.

You should contact a builder:

• Before finalising architectural plans: We can advise on practical layouts, materials, and cost-saving alternatives.
  
  
• During the planning permission stage: We help you understand what’s achievable and can liaise with planning consultants.
  
  
• After approval but before tendering: This is when we can offer precise estimates and build schedules based on your final drawings.
  
  

We’ve helped many homeowners realise their project vision by getting involved early. One such project in Surbiton KT5 involved a loft redesign with bespoke joinery, executed in collaboration with the homeowner’s original architect.

View the transformation here.

What Permissions Do I Need Before Building?

In London, planning permission requirements vary by project and borough. For most loft conversions, internal refurbishments, and rear extensions, you may qualify under Permitted Development Rights, meaning you can skip formal planning.

However, you’ll still need:

• Building Regulations Approval
  
  
• Party Wall Agreements (for shared walls)
  
  
• Structural Calculations
  
  
• Potential conservation area consents
  
  

As a main contractor in West London, HICL works closely with structural engineers and planning consultants to ensure all documentation is in place. We can advise you based on borough-specific regulations, such as Kingston building regulations or planning permissions in Richmond.

For more detailed guidance, visit the Planning Portal — the UK Government’s planning advice website.

How Much Will My Project Cost?

Naturally, how much do London renovations cost is one of the most frequent questions we receive. Costs vary by scope, finishes, access and location. However, as a rough guide:

• Loft Conversions in Surrey and London: From £45,000+
  
  
• Rear Extensions: From £60,000–£120,000
  
  
• Kitchen & Bathroom Renovations: From £20,000
  
  
• Full Refurbishments: From £80,000+
  
  

All HICL quotes are free, detailed, and fixed once the project scope is agreed. We also offer breakdowns for materials, labour and contingencies to help you budget accurately.

Our recent project in Kingswood, Surrey saw a luxury loft created with crittall-style shower screen, oak flooring, and walk-in wardrobe—delivered on time and within budget. Watch the video.

How Long Will It Take?

Every build is unique, but here are average timelines for residential projects:

• Loft Conversions: 6 to 10 weeks
  
  
• Extensions: 10 to 16 weeks
  
  
• Refurbishments: 8 to 20 weeks depending on scale
  
  
• Kitchens & Bathrooms: 3 to 6 weeks
  
  

At HICL, we provide a schedule of works for every major project so you can track progress. Clear timelines reduce stress and make planning around family life much easier.

How Do I Choose a Trusted Builder in London?

If you are searching how to choose a trusted builder in London, consider these key factors:

• Years of experience and qualifications
  
  
• Transparent pricing and detailed contracts
  
  
• Verified client reviews and portfolios
  
  
• Local knowledge and relationships with councils
  
  
• Insurance and structural guarantees
  
  

HICL ticks every box. We are proud of our excellent reviews, professional conduct, and repeat referrals. Many of our clients become friends and refer us again and again.

What Does a Full-Service Construction Package Include?

One of the most frequently asked questions about construction projects in London is what’s included in a full-service offering.

With HICL, you receive:

• Initial site visit and free quote
  
  
• Detailed plan of works
  
  
• All trades under one roof (builders, plumbers, electricians, decorators)
  
  
• Regular updates and point-of-contact support
  
  
• Post-project aftercare and guarantees
  
  

This all-in-one approach means less coordination, fewer delays, and a smoother process for you.

What If I Don’t Have an Architect Yet?

We can help. Whether you are planning a renovation, a house extension, or exploring loft ideas, we work with a trusted network of architects and designers. Our team can introduce you to a suitable partner or provide guidance on what to include in your brief.

How Can I Save Money on Utilities With My Build?

Many homeowners are now seeking sustainable options. In our KT5 case study, we installed a rainwater harvesting system alongside a gym loft conversion. This helps the client reduce water usage and costs.

Watch our rainwater storage system installation here

We also offer advice on insulation, ventilation, solar panels and eco-friendly materials tailored to your goals.

Will I Need to Move Out During Construction?

It depends on the project. For loft conversions, you can often remain in your home with minor adjustments. Kitchen renovations or structural refurbishments may require temporary relocation, which we’ll discuss clearly before works begin.

We pride ourselves on being respectful, tidy and communicative. Our team works quickly and efficiently to minimise disruption.

How Do I Get Started?

If you're wondering when to hire a builder, the answer is now. Whether you’re just starting your renovation journey or already have designs in place, the earlier we talk, the better your outcome will be.

We offer:

• Free consultations
  
  
• Transparent pricing
  
  
• Exceptional build quality
  
  
• Over 20 years of trusted local expertise
  
  

Let us help you turn your ideas into reality.

Call 020 8339 7955 or email office@hiclbuilders.co.uk to book your quote.

Final Thoughts

From understanding planning permissions to knowing what to ask before hiring a building contractor, this guide to the most common construction FAQs in London is designed to help you make informed, confident decisions about your home.

At HICL Builders, we are not just contractors. We are your neighbours, problem-solvers, and trusted partners in building a better home.